Happy.js：轻量级的 jQuery 表单验证插件

<form id="awesomeForm" action="/lights/camera" method="post">
  <input id="yourName" type="text" name="name" />
  <input id="email" type="text" name="email" />
</form>

$('#awesomeForm').isHappy({
	fields: {
		'#yourName': {
			required: true,
			message: '名字是必须的'
		},
		'#email': {
			required: true,
			message: 'email也是必须的',
			test: happy.email 
		}
	}
});

<span id=​"textInput1_unhappy" class=​"unhappyMessage">请输入你的 email ​</span>